Stud setting



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STUD SETTING APPLIANGE. 3

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STUD SETTING APPLIANCE.

Pate NOV. 5, 1895.

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UNITED STATES PATENT OFF CE.

ALBERT LATHAM, OF SPRINGFIELD, MASSACHUSETTS.

STU D-SETTING APPLIANCE.

SPECIFICATION forming part of Letters Patent No. 549,140, dated November5, 1895.

Application filed September 22, 1892. Serial No. 446,511. (No model.)

To all whom it may concern:

Be it known that I, ALBERT LATHAM, a citizen of the United States ofAmerica, residing in Springfield, in the county of Hampden and State ofMassachusetts, have invented new and useful Improvements in Stud-SettingAppliances, of which the following is a specification, reference beinghad to the accompanying drawings and letters of reference markedthereon.

In the drawings, like letters of reference indicating like parts, Figure1 is a side elevation of one form of constructing my device, a partbeing in section. Fig. 2 is a like view of a modified form. Fig. 3 is aside elevation in section, on an enlarged scale, of astud with thesetting-tool in position to begin the heading or setting operation. Fig.4 is a like view after the setting operation is completed and beforeretraction of the tools, and Fig. 5 is a side elevation of anothermodification in the form of constructing my device.

In detail, a indicates the main frame; I), and c, overhanging armsprojecting from the main frame; d, the guide rod or stem, and e thesetting-tool, which operates to turn the edge of the stud-shank, asshown in Figs. 3 andat.

f indicates an operating-lever; g, a frictionscrew; h, springfl i,adjusting nuts or collars; Z, clearance-openings in the setting-tool; m,a spring; a, collar; 0, adjusting-nut; p, a pin uniting the collar andstem; 1", a collar fixed to and moving with the setting-tool; s, abellcrank lever, and t a slotted plate.

The special object of my invention is to provide an appliance by whichstuds formed of a shell filled with rubber, cement, or other similarmaterial may be rapidly set and riveted in position without distortingany of the parts. Studs of this kind have heretofore been set by theemployment of a reciprocating setting-tool, provided with a centralguide or stem; but the motion of the guide has not heretofore beenlimited, so that as a frequent result, the stud is injured because ofthe fact that the projecting stem pressed against the filling, and ithas been found very difficult to produce the desired reciprocatingmovement of the guide rod or stem in the settingtool, and the nose ofthe guide-rod has heretofore become clogged, thus materially interferingwith the operation of the device, and

as the guide-stem has heretofore been operated by a spring its uncertainaction has been a frequent cause of puncturing and destroying the stud.

My invention consists in a construction and operation whereby theobjects of my invention are attained and the difficulties heretoforeexperienced are overcome.

Describing first the device illustrated in Fig. 1, the main frame haspivotally mounted upon it a lever f, through which the body of the stemor the guide-rod 01 passes. The short arm of the lever f bears againstthe head or collar g upon the top of the setting-tool e and forces thesame downwardly, carrying the face of the setting-tool to the desiredposition with reference to the stud and at the same time contracting thespring h, which is located between the collar 9 and the upper face ofthe overhanging arm 0. The body of the guidestem (Z has a tight slidingfit within the body of the setting-tool, occasioned by the setscrew g,and when the setting-tool is carried downwardly or toward the stud thestem is carried with it until the collar 1' is brought in contact withthe upper surface of the overhanging arm b, thus limiting the downwardmotion of the stem, but leaving the settingtool free to be moved untilthe riveting operation is completed. The pressure upon the lever thenbeing released allows the spring h to operate to raise the setting-tooland with it the stem until the collar or nut j engages the lower face ofthe overhanging arm I), after which the setting-tool continues itsupward movement until the expansive power of the spring is exhaused,thus forcing the nose of the stem outwardly. It will be seen that bythis arrangement the guide-rod remains projected a sufficient distancefrom the face of the setting-tool to guide the stud to the properposition with reference to the setting-tool and hold it in accuratecentral position, and that when the position of the nose of theguidestem is such that further motion would en- .danger the stud thenits forward motion interior, and if a guide-stem be used whose edges arenot corrugated then the stud is liable to be distorted or thrown to oneside and the setting operation be rendered unsatisfactory. To avoid thisdanger, I provide the nose of the guide-stem with cuts or recesses,leaving comparativelynarrow edges to enter and be in contact with thewalls of the studshank, and I find with this arrangement a lump orobstruction will not operate to cause the disarrangement with referenceto the registerin g of the stud and setting-tool, but that these edgeswill cut their way through such obstruction and maintain the stud-shankin proper register for the setting-tool. It has been found heretofore,also, that material would become detached from the stud-shank and adhereto the nose and sides of the guidestem, and when the same is retractedconsiderable of the adhering matter would be carried into the opening,and thus clog the device and prevent the free movement of the guidestemin the setting-stool. To aid in overcoming this defect, I provide theportion of the guide-stem which passes through and is in contact withthe face portion of the settingtool with spiral corrugations, so thatample clearance will be had and the edges of the grooves serve to clearthe opening through the face end of the setting-tool, and thuspreventing the adhering of any foreign matter in this opening. I alsoprovide clearance-openings l in the sides of the setting-tool head justabove the face, so that all foreign matter may readily escape therefromand binding be avoided.

The collars or nuts 1' andj on the guide stem serve to limit the motionof the same, and this limit may be varied as circumstances may direct.

In Fig. 2 I have illustrated another form of device for producing thesame desirable result. The frame is substantially the same as firstdescribed. The setting-tool body is eX- tended upwardly through theupper overhanging arm 11 and the operating-lever is connected to thebody of the setting-tool above the arm I). The motion of the lever in adirection to carry the setting-tool toward the stud allows the spring mto operate to force the collar n in the same direction, which motionc011- tinues until the lower face of the adj usting-nut 0 comes incontact with the upper face of the arm 0, which operates to prevent anyfurther movement of the guide-stem in that direction. The collarn issecured to the body of the guidestem by the rod 19, which passes throughthe collar and rod, and the body of the setting-tool is slotted topermit movement of the stem independently of the setting-tool. Thedistance of the throw of the guide-stem may be varied by turning theadjusting-nut o. It will now be seen that the downward motion of thesetting-tool body will permit movement of the guide-stem with it untilthe adjusting-nut is home, at which time the nose or point of theguide-stem has reached the desired point, as

shown in Figs. 3 and 4, 2'. 6., it has entered the opening in the studshank and stopped before it is brought in contact with the material atthe base of the opening, thus avoiding all danger of crushing orloosening the filling at which point it is held, the setting-tool,however, continuing to move toward the stud until. the setting operationis complete. A reverse motion of the lever will carry both thesetting-tool and guide-stem upwardly until the spring on operates torestrain further upward movement of the guide-stem, thus projecting thenose of the guide-stem out from the setting-tool and by this operation(drawing it in and projecting it outwardly) clearing the surface fromall adhering material.

In Fig. 5 I illustrate a device wherein the employment of springs isdispensed with and the motions are all positive. In this the operativelever is attached to the body of the setting-tool. The guide-stem ismounted within the body of the setting-tool and has motion therein, asbefore described. An arm '1' is mounted upon the body of thesetting-tool, and pivotally mounted on the arm 1' I arrange a bell-cranklever 8, one arm of which passes through a slot in the wall of the bodyof the setting-tool and enters a recess in the body of the guide-stem,the head on this end of the bell-crank lever being curved to allow therequisite motion. A plate tis mounted on the main frame of the machine,and this plate is provided with a slot, as shown. A pin in thevertically-arranged arm of the bellcrank lever traverses this slot, andwhen, by reason of the change of the direction of the slot, the pin ischanged in the direction of its motion the arm to which it is attachedwill move with it and the opposite arm be thrown up or down, as the casemay be. If 110w the operating lever be moved to carry the setting tooldownwardly from the position shown in the drawings, the arm 0", mountedupon it, will be moved with it and the bellcrank lever be moved in likemanner so long as the pin a traverses the vertical portion of the slotor portion which lies parallel with the motion of the setting-tool, thusmaintaining the nose of the guide rod or stem in position in advance ofthe face of the setting-tool and forcing it into the shank of the studwith sufficient force to carry obstructing material be fore it. When,however, the nose of the guide-stem has entered the shank of the stud asufiicient distance, the face of the setting tool will have begun toengage the stud-shank and the pin a will have reached that portion ofthe slot which stands at an angle to the traverse of the setting-tool,thus turning the bell-crank lever 8 upon its pivot and carrying the armin engagement with the guide-stem upwardly, or, more properly speaking,maintainin g the guide-rod at rest while the settingtool continues itsmotion toward the stud, thus completing the setting operation while theguide-stem is at rest, thus preventing danger of puncturing or injuringthe stud by reason of pressure of the stem. The setscrew 11 serves tolimit the relative positions of the nose of the guide-stem and face ofthe setting-tool and prevent undue strain upon the lever s. Theadjustment should be such as to retract the point of the guide-stem to aposition flush with the wall of the face of the setting-tool next to it,and when in such position the forcing of the setting-tool and stemfarther to complete the upsetting operation will not endanger the stud.Hence the slot for the traverse of the pin a, after passing the incline,is carried in a line parallel with the traverse of the setting-tool, theportion of the slot at an angle being sufficient to allow the faces ofthe two tools to reach the desired position, as above described. Wherethe motion is positive, as in the construction last described, there isnot the necessity of the sharp-edged point upon the stem, because, asbefore stated, the power will be sufficient to enable it to clear itsway and bring the studshank into accurate register with the tool.

It will readily be seen that the head or face end of the setting-toolmay be made integral with the body portion, or that it may be madeseparately and attached thereto in any con- Venient manner, and that theend of the guide rod or stem may be made integral with or detached fromthe body, as may be desired. It will be seen that if the stud-holdingdie be arranged to move toward the setting-tool the same result will beaccomplished.

I am aware that a button-fastening machine has heretofore been made, asshown in Letters Patent No. 359,631. I am also aware of Letters Patentto Platt, No. 481,588, for machine for attaching buttons, and of patentto Edmands, No. 214,031, for tool for setting eyelets, and I make noclaim to the construction shown in either of said patents. Theguide-stem in my device operates to cause the accurate registry of thestud or hook shank and setting-tool and is restrained from fartherforward movement after the face has reached a point near the base of theopening in the shank, so the guide-stem will not be projected farther,although the setting-tool continues to approach the shank until thesetting operation is complete.

Having therefore described my invention, what I claim, and desire tosecure by Letters Patent, is

1. In a stud setting machine, the combination of a suitable frame, asupporting die for the stud to rest against, a reciprocatingsetting-tool mounted in said frame to register with a stud restingagainst the supporting die, a guide stem projecting through the face ofthe setting tool, means to cause the stem to enter the stud shank, and apositive stop carried downward by the guide stem, contacting with a partof the frame of the machine, and thereby preventing the nose of the stemfrom coming in contact with the base of the opening in the stud shank,while leaving the setting tool free to complete the setting operation,substantially as'described.

2. In a stud setting machine, the combination of a suitable frame, asupporting die for the stud to rest against, a reciprocating settingtool mounted in said frame to register with a stud resting against thesupporting die, a guide stem projecting through the face of the settingtool, means to cause the stem to enter the stud shank, and a positivestop carried downward by the guide stem, contacting with a part of theframe of the machine, and thereby preventing the nose of the stem fromcoming in contact with the base of the opening in the stud shank, whileleaving the setting tool free to complete the setting operation, and ascrew-threaded adjusting device whereby the point of stoppage of saidstem can be nicely adjusted, substantially as described.

3. In a stud-setting machine, the combination with a suitable frame anda stud-holding support thereon, of a hollow setting-tool provided withclearance openings adjacent.

to its setting-end, and a guide-stem in' the hollow of the setting toolformed with vertical recesses in its lower end portion and provided withspiral corrugations in its lower portion above the recessed portion,substantially as described.

4. The combination in a stud-setting machine, of a suitable frame, astud-holding device mounted thereon, a hollow reciprocatingsetting-tool, a guide-stem arranged in the bore of the setting-tool tonormally project from the lower end thereof, a positive stop in the bodyof the guide-stem, and a shoulder on the machine frame against which thestop lodges and positively stops the guide-stem short of the bottom ofthe stud-shank, substantially'as described.

ALBERT LATHAM. Witnesses:

E. M. TOWER, ALLEN WEBsrEn.

